H2b - Study guides, Class notes & Summaries

BIOL 301 Exam 1 Study Guide with Complete Solutions Griffith - Ans:-injected mice with bacteria, discovered concept of transformation Sia & Dawson - Ans:-repeated Griffith's experiment in vitro, proved that mice had nothing to do with transformation Avery, MacLeod, and McCarty - Ans:-used DNase, RNase, and protease to determine that DNA is the factor in transformation Hershey and Chase - Ans:-used radioactive isotopes of P and S to determine that DNA is the genetic material Frankel-C...

Chromatin structure - AnswerNegatively charged DNA loops twice around histone octamer (2 each of the positively charged H2A, H2B, H3, and H4) to form nucleosome bead. H1 ties nucleosomes together in a string. (Think of "beads on a string"; H1 is the only histone that is not in the nucleosome core.) In mitosis, DNA condenses to form mitotic chromosomes. <img src="66a - Euchramatin strxr.JPG" /> Heterochromatin - AnswerCondensed, transcriptionally inactive ("H eteroC hromatin = H igh...

The paramecium discussed in class contained an organelle called the contractile vacuole. This is the presumed precursor of the: - Correct answer-kidney A cell that is anchorage-dependent for growth will also exhibit contact inhibition. - Correct answer-true In your own multicellular body, cells with different functions have different DNA. - Correct answer-false The contractile vacuole of the paramecium is possibly an evolutionary precursor of the kidney. - Correct answer-true The paramec...

BCHM 218 Exam Questions and Answers 100% Pass Chromatin is composed of: - Correct Answer️️ -DNA and protein Of the proteins associated with chromatin, which of the following represents the largest component? - Correct Answer️️ -Histones The first evidence for nucleosome formation came from digesting chromosomal DNA with a non-specific nuclease. Gel electrophoresis of the DNA after the reaction revealed: - Correct Answer️️ -A large band corresponding to 200bp Each nucleosome c...

MCB Exam 1 Review Questions And Answers Latest Top Score. 1. Highly condensed chromatin that is transcriptionally inactive is called - correct answer. Heterochromatin 1. If you were to make a synthetic form of DNA in which the phosphate group is substituted by a chemical group exhibiting a net positive charge, the resulting synthetic DNA" - correct answer. Would likely not be packaged by histones The major structural proteins in human chromatin are known as - cor...

Function of histone proteins in DNA - ACCURATE ANSWERS help package DNA into chromatin Function of nonhistone proteins in DNA - ACCURATE ANSWERS structure, replication, segregation, and gene expression What charge is histone - ACCURATE ANSWERS positive, basic What 4 types of histones form the nucleosome - ACCURATE ANSWERS H2A, H2B, H3, and H4 What are 2 types of nonhistone proteins - ACCURATE ANSWERS 1. Scaffold 2. Kinetochore (CENP-E) What is the function of the scaffold protein...

DNA packaging: goes from....correct answers Double helix -> chromatin -> chromosomes Nucleosomes are made up ofcorrect answers Core proteins: H2A, H2B, H3, H4 200 bp of DNA ish H1 linker histones bind to DNA Histone code hypothesis statescorrect answers Covalent modification of histone residues via the N-tail of core histones affect the transcriptional status of DNA Histone acetylation works bycorrect answers neutralizing the charges on histones and loosens up the interactions b...

Biochem Exam 3 Rutgers Murphy Practice Questions and Answers Below is a diagram that best explain which type of cellular signaling? - Ans:-G-coupled protein receptor signaling The intracellular portion of the G-Coupled Protein that exchanges GDP for GTP, dissociating from the other two and becomes active is called? - Ans:-alpha The type of hormone receptors that are found within the cell are called? - Ans:-Nuclear receptors Determine the primary sequence of a protein that would be produce...

Genetics Exam 3 Practice Test 50 Questions with Verified Answers Gene conversion results from A. Discontinuous replication B. Photoreactivation C. Mismatch repair D. Gap Repair E. C and D - CORRECT ANSWER E. C and D The picture below is two Holliday junctions in a pair of DNA molecules undergoing recombination Breakage and rejoining of the strands indicated by the arrows () and () results in crossover. A. 1 and 2 B. 2 and 3 C. 3 and 4 - CORRECT ANSWER B. 2 and 3 In eukaryoti...

1. The most precise modern definition of a gene is a segment of genetic material that: A) codes for one polypeptide. B) codes for one polypeptide or RNA product. C) determines one phenotype. D) determines one trait. E) that codes for one protein. B. codes for one polypeptide or RNA product 2. The DNA in a bacterial (prokaryotic) chromosome is best described as: A) a single circular double-helical molecule. B) a single linear double-helical molecule. C) a single linear single-...